CAJ | 학술논문

以硫酸钛为钛源,粉煤灰厚壁空心微珠为基体,采用化学沉积和900~1000℃煅烧2 h 的联合工艺制备了表面镀覆金红石型 TiO2的功能性粉煤灰微珠.借助激光粒度分析仪、X射线衍射仪、场发射扫描电子显微镜、X 射线能谱仪等表征技术对包覆前后微珠粒径分布、化学成分、表面形貌和结构进行了对比分析.275 W红外灯对上表面分别涂抹掺原微珠涂料和掺功能性微珠(占涂料质量的20％)涂料的水泥砂浆基板照射2 h,后者基板下表面温度比前者约低1．4℃,这是粉煤灰微珠表面金红石型 TiO2热反射效应作用的结果.
이류산태위태원,분매회후벽공심미주위기체,채용화학침적화900~1000℃단소2 h 적연합공예제비료표면도복금홍석형 TiO2적공능성분매회미주.차조격광립도분석의、X사선연사의、장발사소묘전자현미경、X 사선능보의등표정기술대포복전후미주립경분포、화학성분、표면형모화결구진행료대비분석.275 W홍외등대상표면분별도말참원미주도료화참공능성미주(점도료질량적20％)도료적수니사장기판조사2 h,후자기판하표면온도비전자약저1．4℃,저시분매회미주표면금홍석형 TiO2열반사효응작용적결과.
The functionality fly ash microsphere plated rutile TiO2 was prepared by means of the union process of chemical sedimentation and burned of 2 h at 900-1 000 ℃ with the matrix of fly ash thick wall microspheres the titanium source of titanium sulfate.The size distribution,chemical composition,surface morphology and struc-ture of un-cladding and cladding microsphere were comparatively analyzed by the characterization techniques of laser particle size analyzer,SEM,XRD,and EDS.The upper surfaces of the cement mortar base plates,which were painted respectively exterior wall coating material adding original microsphere or adding functionality mi-crosphere (20% of coating material mass)coating material,were continuously irradiated for 2 h under a infra-red lamp of 275 kW.The temperature of the bottom side of the latter base plate was lower about 1.4 ℃ than that of the bottom side of the former base plate.This was the consequence of heat reflection effect of rutile TiO2 cladding on the surface of fly ash microsphere.